1///////////////////////////////////////////////////////////////////////////////
2//
3/// \file delta_decoder.c
4/// \brief Delta filter decoder
5//
6// Author: Lasse Collin
7//
8// This file has been put into the public domain.
9// You can do whatever you want with this file.
10//
11///////////////////////////////////////////////////////////////////////////////
12
13#include "delta_decoder.h"
14#include "delta_private.h"
15
16
17static void
| 1///////////////////////////////////////////////////////////////////////////////
2//
3/// \file delta_decoder.c
4/// \brief Delta filter decoder
5//
6// Author: Lasse Collin
7//
8// This file has been put into the public domain.
9// You can do whatever you want with this file.
10//
11///////////////////////////////////////////////////////////////////////////////
12
13#include "delta_decoder.h"
14#include "delta_private.h"
15
16
17static void
|
18decode_buffer(lzma_coder *coder, uint8_t *buffer, size_t size)
| 18decode_buffer(lzma_delta_coder *coder, uint8_t *buffer, size_t size)
|
19{
20 const size_t distance = coder->distance;
21
22 for (size_t i = 0; i < size; ++i) {
23 buffer[i] += coder->history[(distance + coder->pos) & 0xFF];
24 coder->history[coder->pos-- & 0xFF] = buffer[i];
25 }
26}
27
28
29static lzma_ret
| 19{
20 const size_t distance = coder->distance;
21
22 for (size_t i = 0; i < size; ++i) {
23 buffer[i] += coder->history[(distance + coder->pos) & 0xFF];
24 coder->history[coder->pos-- & 0xFF] = buffer[i];
25 }
26}
27
28
29static lzma_ret
|
30delta_decode(lzma_coder *coder, const lzma_allocator *allocator,
| 30delta_decode(void *coder_ptr, const lzma_allocator *allocator,
|
31 const uint8_t *restrict in, size_t *restrict in_pos,
32 size_t in_size, uint8_t *restrict out,
33 size_t *restrict out_pos, size_t out_size, lzma_action action)
34{
| 31 const uint8_t *restrict in, size_t *restrict in_pos,
32 size_t in_size, uint8_t *restrict out,
33 size_t *restrict out_pos, size_t out_size, lzma_action action)
34{
|
| 35 lzma_delta_coder *coder = coder_ptr;
36
|
35 assert(coder->next.code != NULL);
36
37 const size_t out_start = *out_pos;
38
39 const lzma_ret ret = coder->next.code(coder->next.coder, allocator,
40 in, in_pos, in_size, out, out_pos, out_size,
41 action);
42
--- 34 unchanged lines hidden --- | 37 assert(coder->next.code != NULL);
38
39 const size_t out_start = *out_pos;
40
41 const lzma_ret ret = coder->next.code(coder->next.coder, allocator,
42 in, in_pos, in_size, out, out_pos, out_size,
43 action);
44
--- 34 unchanged lines hidden --- |